CN110202871B - Carbon fiber-metal hybrid square tube and manufacturing method thereof - Google Patents
Carbon fiber-metal hybrid square tube and manufacturing method thereof Download PDFInfo
- Publication number
- CN110202871B CN110202871B CN201910373845.8A CN201910373845A CN110202871B CN 110202871 B CN110202871 B CN 110202871B CN 201910373845 A CN201910373845 A CN 201910373845A CN 110202871 B CN110202871 B CN 110202871B
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- square pipe
- square tube
- end cover
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 75
- 239000004917 carbon fiber Substances 0.000 claims abstract description 75
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000011229 interlayer Substances 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 4
- 239000010962 carbon steel Substances 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a carbon fiber-metal hybrid square tube, wherein a tube body of the square tube comprises an inner square tube, a carbon fiber interlayer and an outer square tube which are coaxial and are sequentially compressed from inside to outside, and the carbon fiber interlayer is wound on the outer wall of the inner square tube; the inner square tube structure and the outer square tube are both metal structures; the carbon fiber interlayer is of a unidirectional carbon fiber prepreg structure. The invention also provides a manufacturing method of the carbon fiber-metal hybrid square tube. The invention has the beneficial effects that: the square tube consists of an inner square tube, a carbon fiber interlayer and an outer square tube which are sequentially from inside to outside, wherein the inner square tube and the outer square tube are made of carbon steel, the structure is simple, secondary processing is not needed, interface damage caused by secondary processing of FMLs can be avoided, and the mechanical property is strong; according to the method, the screw is used for pre-tensioning or pre-pressing during the manufacturing of the square pipe, so that the residual stress generated in the subsequent high-temperature curing process can be effectively reduced or even eliminated, and the mechanical property and the dimensional stability of the hybrid square pipe are effectively improved.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a carbon fiber-metal hybrid square tube and a manufacturing method thereof.
Background
Fiber Metal Laminates (FMLs) are hybrid laminated structures composed of Fiber reinforced composite materials and metals, and the characteristics of high specific strength and specific rigidity of traditional Fiber reinforced composite materials and excellent processability and impact resistance of Metal materials are integrated, so that the FMLs are widely applied to the industrial fields of aerospace, ships, automobiles, machine tools, rail transit and the like.
At present, panels of FMLs composed of aluminium alloys and various fibre-reinforced composites (aramid, glass fibre and carbon fibre-reinforced composites) have been intensively studied and used for several years in the above-mentioned industrial fields. FMLs plate usually needs secondary processing to form a required complex structure, and the damage of a metal and fiber reinforced composite material connection interface is inevitably caused in the processing process; in the process of high-temperature curing of FMLs, residual stress is inevitably generated due to different thermal expansion coefficients of carbon fibers and metal; in addition, the mechanical properties of the aluminum alloy are low, so that the FMLs are also low in mechanical properties, and based on pursuits of different properties, the production requirements are difficult to meet.
Disclosure of Invention
The invention aims to provide a carbon fiber-metal hybrid square tube and a manufacturing method thereof aiming at the defects of the prior art, and solves the technical problems of complex processing process, poor mechanical property and the like of FMLs in the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a carbon fiber-metal mixes side's pipe, the body of side's pipe is sandwich structure, including coaxial and interior side's pipe, carbon fiber interlayer and the outer side's pipe that compresses tightly from inside to outside in proper order, carbon fiber interlayer twines in the outer wall of interior side's pipe.
According to the scheme, the inner square pipe and the outer square pipe are both of metal structures; the carbon fiber interlayer is of a unidirectional carbon fiber prepreg structure.
According to above-mentioned scheme, outer side pipe is split type structure, is formed by the overlap joint of the outer square pipe unit of two L types, and the inner wall of outer square pipe unit compresses tightly carbon fiber interlayer's outer peripheral face.
The invention also provides a manufacturing method of the square tube, which comprises the following steps:
the method comprises the following steps that firstly, a tool is provided, wherein the tool comprises a front end cover, a rear end cover, a screw rod and a hand wheel, the front end cover and the rear end cover are respectively fixed on hoops at two ends of a square tube body through a plurality of screws, one end of the screw rod is in threaded fit with the front end cover, and the other end of the screw rod axially extends into the center of the tube body and is fixedly connected with the rear end cover;
step two, providing the inner square pipe and the two outer square pipe units of the pipe body;
cutting the unidirectional carbon fiber prepreg and winding the unidirectional carbon fiber prepreg on the outer wall of the inner square pipe until the winding thickness reaches the designed thickness of the carbon fiber interlayer, ensuring that the reserved lengths at the two ends of the carbon fiber interlayer can be attached to the outer side surfaces of the front end cover and the rear end cover, and then tightly holding the inner square pipe wound with the carbon fiber interlayer by the two outer square pipe units;
step four, clasping the outer square pipe at two ends of the pipe body respectively by using a hoop, and fixing the hoop by using a connecting screw after the hoop is aligned with the end surface of the outer square pipe; bending and attaching the carbon fiber interlayer extending out of the two ends to the metal end surface, connecting the front end cover and the rear end cover with a clamp respectively, clamping the carbon fiber interlayer through an outer square pipe, and clamping the end part of the carbon fiber interlayer;
fifthly, screwing the screw rod into the rear end cover through the front end cover to be connected and fixed;
rotating a screw rod through a hand wheel, stretching the carbon fiber interlayer through a rear end cover by the screw rod, or compressing the inner square pipe and the outer square pipe, wherein the stretching amount of the carbon fiber interlayer or the compression amount of the inner square pipe and the outer square pipe reaches a set value, and then fixing the relative position of the clamp and the outer square pipe by a fastening screw;
and seventhly, removing the screw, the hoop and the end cover after high-temperature curing to obtain the carbon fiber-metal hybrid square tube.
According to the scheme, in the step one, the screw is in threaded fit with the front end cover.
According to the scheme, in the first step, the thrust bearing and the locking nut are arranged on the outer side of the rear end cover, and the screw is fixedly connected with the rear end cover through the thrust bearing and the locking nut.
According to the scheme, in the first step, one end of the screw rod, which is positioned at the front end cover, is a movable end, and the movable end of the screw rod is connected with a hand wheel; the hand wheel comprises a transmission shaft, one end of the transmission shaft is connected with the movable end of the screw rod, and the other end of the transmission shaft transversely penetrates through a rotating handle.
According to the scheme, in the step two, the outer surface of the inner square pipe and the inner wall surface of the outer square pipe unit are subjected to shot blasting treatment and cleaned.
According to the scheme, in the third step, the unidirectional carbon fiber prepreg is uniformly wound on the outer wall of the inner square pipe in the axial direction.
According to the scheme, in the fourth step, the carbon fiber interlayers at two ends are respectively clamped through the front end cover, the rear end cover and the hoop.
The invention has the beneficial effects that:
1. the hybrid square tube is composed of an inner square tube, a carbon fiber interlayer and an outer square tube which are sequentially arranged from inside to outside, wherein the inner square tube and the outer square tube are made of carbon steel. The excellent mechanical property of carbon steel and the designability of the angle and thickness of the unidirectional carbon fiber layer are utilized, and the mechanical property and the dynamic property (such as rigidity and damping property) of the hybrid square tube can adapt to different production requirements. Compared with the existing FMLs plate, the structure is simple, secondary processing is not needed, interface damage caused by secondary processing of the FMLs can be avoided, and the mechanical property is strong;
2. untreated FMLs inevitably produce residual tensile stresses in the metal layer and residual compressive stresses in the carbon fiber layer during high temperature curing due to the difference in thermal expansion coefficients between the carbon fibers and the metal. Numerous studies have demonstrated that the presence of residual stresses reduces the fatigue strength and fracture toughness of FMLs, causing cracks and delamination of the fibrous layers, resulting in structural deformation. According to the method, the screw is used for pre-tensioning or pre-pressing when the hybrid square pipe is manufactured, so that the residual stress generated in the subsequent high-temperature curing process can be effectively reduced or even eliminated, and the mechanical property and the dimensional stability of the hybrid square pipe are improved.
Drawings
FIG. 1 is a schematic view of the structure of the square tube of the present invention.
Fig. 2 is a left side view of fig. 1.
FIG. 3 is a schematic view of the square tube of the present invention mounted on a tool.
Fig. 4 is a sectional view a-a of fig. 3.
Fig. 5 is a right side view of fig. 3.
Wherein: 1. a hand wheel; 2. a front end cover; 3. a screw; 4. an outer square tube; 5. a carbon fiber interlayer; 6. an inner square tube; 7. tightening the screw; 8. a connecting screw; 9. a rear end cap; 10. a thrust bearing; 11. locking the nut; 12. and (5) clamping a hoop.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, a carbon fiber-metal hybrid square tube, a tube body of the square tube comprises an inner square tube 6, a carbon fiber interlayer 5 and an outer square tube 4 which are coaxial and are sequentially compressed from inside to outside, wherein the carbon fiber interlayer 5 is wound on the outer wall of the inner square tube 6; the outer square pipe 4 is of a split structure and formed by overlapping two L-shaped outer square pipe units (the outer square pipe units are formed by bending steel plates by 90 degrees, the two sides of each outer square pipe unit are chamfered, and the two outer square pipe units are matched to form an outer square pipe); the inner wall of the outer square tube unit compresses the outer peripheral surface of the carbon fiber interlayer 5; the inner square pipe 6 and the outer square pipe are both of metal structures, and preferably made of carbon steel; the carbon fiber interlayer 5 is of a unidirectional carbon fiber prepreg structure.
As shown in fig. 2, the method for manufacturing the carbon fiber-metal hybrid square tube specifically comprises the following steps:
step one, providing a tool for fixing the carbon fiber metal hybrid square tube, wherein the tool comprises a front end cover 2, a rear end cover 9, a screw rod 3 and a hand wheel 1, the front end cover 2 and the rear end cover 9 are respectively fixed on clamps 12 at two ends of a square tube body through a plurality of screws, one end of the screw rod 3 is in threaded fit with the front end cover 2, the other end of the screw rod 3 axially extends into the center of the tube body, and sequentially penetrates through a central through hole of the rear end cover 9 and a thrust bearing 10 to be matched with a locking nut 11 (the thrust bearing can be a plane thrust ball bearing or a thrust roller bearing); one end of the screw rod 3, which is positioned on the front end cover 2, is a movable end, and the movable end of the screw rod 3 is connected with a hand wheel 1; the hand wheel 1 comprises a transmission shaft with one end connected with the movable end of the screw rod 3, and the other end of the transmission shaft transversely penetrates through a rotating handle; preferably, the screw rod 3 is in threaded fit with the front end cover 2;
step two, providing the inner square pipe 6 and the two outer square pipe units of the pipe body: processing the inner square pipe 6 and the outer square pipe unit, and performing shot blasting treatment on the outer surface of the inner square pipe 6 and the inner wall surface of the outer square pipe unit and cleaning the outer surface and the inner wall surface so as to improve the adhesion between the inner square pipe 6 and the outer square pipe unit and the carbon fiber interlayer 5;
step three, preparing unidirectional carbon fiber prepreg and cutting according to the size of the inner square pipe 6; the cut unidirectional carbon fiber prepreg is uniformly wound on the outer wall of the inner square pipe 6 along the axial direction until the winding thickness reaches the designed thickness of the carbon fiber interlayer 5, the reserved lengths of the two ends of the carbon fiber interlayer 5 are ensured to be attached to the outer side surfaces of the front end cover 2 and the rear end cover 9, and the two outer square pipe units are used for tightly holding the inner square pipe 6 wound with the carbon fiber interlayer 5; in order to achieve the optimal axial rigidity, the winding direction of the carbon fiber interlayer 5 is consistent with the axial direction of the inner square pipe 6 (the carbon fiber interlayer 5 is a unidirectional carbon fiber prepreg, namely, a plurality of single fibers are in the same direction, when the direction is consistent with the axial direction of the inner square pipe, the axial rigidity is maximum, and the radial rigidity is minimum), and the thickness of the carbon fiber interlayer 5 is determined by the total thickness of the inner square pipe 6, the outer square pipe 4 and the square pipe;
step four, respectively using a hoop 12 to tightly hold the outer square pipe 4 at two ends of the pipe body, and fixing the hoop 12 by using a connecting screw 8 after the hoop 12 is aligned with the end surface of the outer square pipe 4, as shown in fig. 4 and 5; the carbon fiber interlayers 5 extending out of two ends are respectively cut off along four corners of the square tube, so that the carbon fiber interlayers are conveniently bent and attached to the metal end surface (the carbon fiber interlayers 5 extending out of two ends are respectively bent by 90 degrees after being cut into four pieces and then attached to the metal end surface), the front end cover 2 and the rear end cover 9 are respectively connected with the clamp 12, and the carbon fiber interlayers 5 are clamped through the outer square tube 4, as shown in fig. 4;
fifthly, screwing the screw rod 3 to the rear end cover 9 through the front end cover 2, and connecting and fixing the screw rod 3 and the rear end cover 9 by using a plane thrust ball bearing 10 and a locking nut 11;
sixthly, rotating the screw rod 3 through the hand wheel 1, stretching the carbon fiber interlayer 5 through the rear end cover 9 by the screw rod 3, or compressing the inner square pipe 6 and the outer square pipe 4, and fixing the relative position of the clamp 12 and the outer square pipe 4 by using a set screw 7 after the stretching amount of the carbon fiber interlayer 5 or the compression amount of the inner square pipe 6 and the outer square pipe 4 reaches a set value (the set value is determined by the residual tensile stress of a metal layer or the residual compressive stress of a carbon fiber layer, the thermal expansion coefficients of metal and carbon fiber, the curing temperature and the room temperature);
and seventhly, removing the screw 3, the hoop 12 and the end cover after high-temperature curing, and cutting the carbon fiber interlayer 5 with two bent ends to obtain the carbon fiber-metal hybrid square tube.
Due to the different thermal expansion coefficients of carbon fibers and metals, FMLs, a hybrid material inevitably generates residual tensile stress in the metal layer and residual compressive stress in the carbon fiber layer when the temperature is reduced from the curing temperature (typically over 100 degrees celsius) to room temperature. The principle of the invention is as follows: in the invention, two ends of a carbon fiber interlayer 5 are respectively clamped and fixed by a front end cover 2 and a hoop 12, and a rear end cover 9 and the hoop 12; rotating the screw rod 3 by rotating the hand wheel 1, fixing one end of the screw rod 3 with the rear end cover 9, screwing the other end of the screw rod 3 with the front end cover 2, tightly pushing the rear end cover 9 by the screw rod 3 when the hand wheel 1 is rotated clockwise, enabling the front end cover 2 and the rear end cover 9 to deviate from each other and move axially outwards, and stretching the carbon fiber interlayer 5; when the hand wheel 1 is rotated anticlockwise, the screw rod 3 drives the rear end cover 9 and the front end cover 2 to move oppositely, and the front end cover 2 and the rear end cover 9 compress the inner square pipe 6 and the outer square pipe 4 at the moment. When the carbon fiber sandwich 5 reaches a predetermined amount of tension or the inner and outer tubes 6 and 4 reach a predetermined amount of compression, the band 12 and the outer tube 4 are fixed by the set screw 7. By pre-tensioning or pre-pressing, the residual stress generated in the high-temperature curing process of the square pipe can be effectively reduced or even eliminated.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (6)
1. The manufacturing method of the square tube is characterized by comprising the following steps of:
the method comprises the following steps that firstly, a tool is provided, wherein the tool comprises a front end cover, a rear end cover, a screw rod and a hand wheel, the front end cover and the rear end cover are respectively fixed on hoops at two ends of a square tube body through a plurality of screws, one end of the screw rod is in threaded fit with the front end cover, and the other end of the screw rod axially extends into the center of the tube body and is fixedly connected with the rear end cover;
step two, providing a carbon fiber-metal hybrid square tube, wherein the tube body of the carbon fiber-metal hybrid square tube is of a sandwich structure and comprises an inner square tube, a carbon fiber interlayer and an outer square tube which are coaxial and are sequentially compressed from inside to outside, and the carbon fiber interlayer is wound on the outer wall of the inner square tube; the inner square tube structure and the outer square tube are both metal structures; the carbon fiber interlayer is of a unidirectional carbon fiber prepreg structure; the outer square pipe is of a split structure and formed by overlapping two L-shaped outer square pipe units, and the inner wall of each outer square pipe unit compresses the outer peripheral surface of the carbon fiber interlayer;
cutting the unidirectional carbon fiber prepreg and winding the unidirectional carbon fiber prepreg on the outer wall of the inner square pipe until the winding thickness reaches the designed thickness of the carbon fiber interlayer, ensuring that the reserved lengths at the two ends of the carbon fiber interlayer can be attached to the outer side surfaces of the front end cover and the rear end cover, and then tightly holding the inner square pipe wound with the carbon fiber interlayer by the two outer square pipe units;
step four, clasping the outer square pipe at two ends of the pipe body respectively by using a hoop, and fixing the hoop by using a connecting screw after the hoop is aligned with the end surface of the outer square pipe; bending and attaching the carbon fiber interlayer extending out of the two ends to the metal end surface, connecting the front end cover and the rear end cover with a clamp respectively, clamping the carbon fiber interlayer through an outer square pipe, and clamping the end part of the carbon fiber interlayer;
fifthly, screwing the screw rod into the rear end cover through the front end cover to be connected and fixed;
rotating the screw rod, stretching the carbon fiber interlayer through the rear end cover by the screw rod, or compressing the inner square pipe and the outer square pipe, wherein the stretching amount of the carbon fiber interlayer or the compression amount of the inner square pipe and the outer square pipe reaches a set value, and then fixing the relative position of the clamp and the outer square pipe by a fastening screw;
and seventhly, removing the screw, the hoop and the end cover after high-temperature curing to obtain the carbon fiber-metal hybrid square tube.
2. The method for manufacturing the square pipe according to claim 1, wherein in the first step, a thrust bearing and a lock nut are arranged on the outer side of the rear end cover, and the screw is fixedly connected with the rear end cover through the thrust bearing and the lock nut.
3. The method for manufacturing the square tube according to claim 1, wherein in the first step, one end of the screw rod, which is positioned on the front end cover, is a movable end, and the movable end of the screw rod is connected with a hand wheel; the hand wheel comprises a transmission shaft, one end of the transmission shaft is connected with the movable end of the screw rod, and the other end of the transmission shaft transversely penetrates through a rotating handle.
4. A method of manufacturing a square pipe according to claim 1, wherein in the second step, the outer surface of the inner square pipe and the inner wall surface of the outer pipe unit are subjected to shot blasting and cleaned.
5. The method for manufacturing a square pipe according to claim 1, wherein in the third step, unidirectional carbon fiber prepreg is uniformly wound around the outer wall of the inner square pipe in the axial direction.
6. The method of manufacturing a square pipe according to claim 1, wherein in step four, the carbon fiber interlayers at both ends are clamped by the front and rear end caps and the clamp respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373845.8A CN110202871B (en) | 2019-05-07 | 2019-05-07 | Carbon fiber-metal hybrid square tube and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373845.8A CN110202871B (en) | 2019-05-07 | 2019-05-07 | Carbon fiber-metal hybrid square tube and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110202871A CN110202871A (en) | 2019-09-06 |
| CN110202871B true CN110202871B (en) | 2020-12-01 |
Family
ID=67785535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910373845.8A Active CN110202871B (en) | 2019-05-07 | 2019-05-07 | Carbon fiber-metal hybrid square tube and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110202871B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195987A (en) * | 2013-04-17 | 2013-07-10 | 孔少云 | Superhigh-ring-stiffness plastic-steel composite pipe and manufacturing method thereof |
| CN107336474A (en) * | 2016-04-29 | 2017-11-10 | 比亚迪股份有限公司 | A kind of metallic fiber composite pipe and preparation method thereof |
-
2019
- 2019-05-07 CN CN201910373845.8A patent/CN110202871B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195987A (en) * | 2013-04-17 | 2013-07-10 | 孔少云 | Superhigh-ring-stiffness plastic-steel composite pipe and manufacturing method thereof |
| CN107336474A (en) * | 2016-04-29 | 2017-11-10 | 比亚迪股份有限公司 | A kind of metallic fiber composite pipe and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110202871A (en) | 2019-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100237256B1 (en) | Cylindrical part manufactured by fiber reinforced plastic composite material and the method thereof | |
| US20050175813A1 (en) | Aluminum-fiber laminate | |
| US6176640B1 (en) | Tubular composite structural parts having clamp area configuration to prevent cracking under clamping stress | |
| US11125268B2 (en) | Composite structural component with captive mechanical joint | |
| CN109855473A (en) | A kind of bulletproof composite armour plate and preparation method thereof | |
| CN104191796A (en) | Preparation method of carbon fiber reinforced polyimide fiber metal laminate | |
| CN114030241B (en) | Carbon fiber composite honeycomb, preparation method and application | |
| EP1415799B1 (en) | Method of improving crack resistance in fiber-metal-laminate structures | |
| CN110202871B (en) | Carbon fiber-metal hybrid square tube and manufacturing method thereof | |
| CN105389433A (en) | Method for analyzing crushing property of composite material coated twelve-rectangular-cross-section thin-walled beam | |
| CN109109340B (en) | Composite material shaft and preparation method and application thereof | |
| CN111347736B (en) | Composite metal structure with interlayer core material and preparation method thereof | |
| Padmanabhan et al. | Crashworthiness test on hollow section structural (HSS) frame by metal fiber laminates with various geometrical shapes-Review | |
| Ekşi et al. | Three point bending behavior of woven glass, aramid and carbon fiber reinforced hybrid composite tube | |
| KR20180076574A (en) | Reinforced lay-up structure and method of carbon epoxy prepreg on joining section between cfrp high torsion propeller filament winding shaft and metallic flange | |
| Boon et al. | Effects of mechanical surface treatment on bonding between aluminum and carbon/epoxy composites | |
| CN110039850B (en) | Manufacturing method of carbon fiber reinforced metal laminated square tube | |
| JP2610581B2 (en) | Joining member having dimensional change function, joining structure and joining method using the same | |
| KR100325406B1 (en) | Fabrication method of CARALL hybrid composite material for aircraft structure | |
| CN112341813B (en) | Method for improving damping performance of carbon fiber reinforced tube | |
| CN118322670B (en) | Gradient structure impact-resistant titanium-based fiber metal laminated plate and manufacturing method thereof | |
| CN114193675B (en) | Preparation process of stainless steel ultrathin belt/carbon fiber tube | |
| US20050181181A1 (en) | Method of multi-axial crystalline thermoplastic coating of composite structures | |
| JPH06257607A (en) | Connection method for fiber reinforced resin pipe | |
| Guoxin et al. | A new superhybrid composite material: Vinylon-reinforced aluminium laminate (VIRALL) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |